Chiron

Chiron is a major figure in Greek mythology. A centaur, Chiron was an exception to the generally wild characteristics of other members of his race. He trained men like Theseus and Achilles, and he made some of the strongest warriors of ancient Greek legend.

History
Chiron was originally a god of healing in Thessalian mythology, but later became an immortal centaur in the more widely accepted Greek mythology. Although Centaurs were usually wild and unruly, Chiron was the exception. He was noted for being wise and his knowledge of healing was legendary. He was the tutor of many notable heroes, including Theseus and Achilles.

In the story "Fall of the Trident", an epic legend of Greek, Egyptian, Atlantean, and Norse mythology, Chiron was captured by the forces of the cyclops Gargarensis when he raided the port city of Ioklos in present-day Thessaly, Greece. He was freed by the warriors Achilles, Ajax, Heracles, and Jason, and together they attempted to save the other prisoners, who were put to use in mining an entrance to Erebus, the underworld and the realm of Hades. However, all of their men were killed by Gargarensis, who rained fire on them, forcing them to follow him into Erebus alone. In the underworld, they destroyed his ram when it tried to open an entrance into Tartarus, and they escaped with the help of the Shades, Charon, and the god Zeus. They exited the underworld in Egypt, where they worked together to revive the god Osiris to fight Gargarensis' ally, the god Set. They pursued Gargarensis and his followers to Scandinavia, but when Fire Giants pursued the heroes, Chiron decided to sacrifice himself. He toppled boulders in the path of the giants to prevent them from chasing his allies, but they killed him.